EP0402620B1 - Wireless transmitting-receiving apparatus for a bicycle - Google Patents

Wireless transmitting-receiving apparatus for a bicycle Download PDF

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Publication number
EP0402620B1
EP0402620B1 EP90108653A EP90108653A EP0402620B1 EP 0402620 B1 EP0402620 B1 EP 0402620B1 EP 90108653 A EP90108653 A EP 90108653A EP 90108653 A EP90108653 A EP 90108653A EP 0402620 B1 EP0402620 B1 EP 0402620B1
Authority
EP
European Patent Office
Prior art keywords
transmitting
receiving apparatus
signal
pulse
signals
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90108653A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0402620A2 (en
EP0402620A3 (en
Inventor
Nobuo Sakurai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CatEye Co Ltd
Original Assignee
CatEye Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CatEye Co Ltd filed Critical CatEye Co Ltd
Publication of EP0402620A2 publication Critical patent/EP0402620A2/en
Publication of EP0402620A3 publication Critical patent/EP0402620A3/en
Application granted granted Critical
Publication of EP0402620B1 publication Critical patent/EP0402620B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/489—Digital circuits therefor
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J45/00—Electrical equipment arrangements specially adapted for use as accessories on cycles, not otherwise provided for
    • B62J45/20—Cycle computers as cycle accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J50/00—Arrangements specially adapted for use on cycles not provided for in main groups B62J1/00 - B62J45/00
    • B62J50/20—Information-providing devices
    • B62J50/21—Information-providing devices intended to provide information to rider or passenger
    • B62J50/22—Information-providing devices intended to provide information to rider or passenger electronic, e.g. displays
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/16—Electric signal transmission systems in which transmission is by pulses

Definitions

  • the present invention relates to a wireless transmitting-receiving apparatus and, more specifically to a wireless transmitting-receiving apparatus suitable for use in a speedometer of a bicycle and the like.
  • a speedometer is often attached to two-wheeled vehicles and, especially on bicycles so as to show, in a simple manner, the travel speed, the travel distance and the like.
  • a rotation sensor is attached to a fork
  • a body of the speedometer is attached to a handle by means of a bracket and the sensor and the bracket are connected to each other by a cord, as shown in Japanese Patent Laying Open No. 57-149967.
  • Signals generated based on the rotation of the front wheel of the bicycle are inputted to the speedometer through the cord, and the travel speed of the bicycle is calculated to be displayed based on the signals.
  • the speedometer is adapted to calculate the travel speed of a bicycle, such that the rotary signal is outputted as one pulse signal per one rotation of the wheel of the bicycle, the number of generation of the pulse signals are counted, and the travel speed of the bicycle is calculated based on the counted value.
  • the pseudo signals may be counted as the proper pulse signals. As a result, the speed of the bicycle can not be accurately counted or displayed.
  • a wireless transmitting-receiving apparatus comprising a signal generating means generating pulse signals depending on the rotation of a rotary member. Four pulses are generated for each rotation of the rotating member. These pulses are processed by a receiver using two monostable multi-vibrators to generate two pulses with a predetermined length. These pulses are applied to a AND-gate which produces a signal for a counter.
  • a wireless, namely infrared signal transmission receiver system wherein the noise immunity is improved by converting single pulses into two or more pulses of equal or different shapes. These are reconverted to original single pulses.
  • the wireless transmitting-receiving apparatus structured as described above transmits a signal by converting the same into a plurality of signals, so that the signal can be received without any influence of other signals, whereby the reliability in the transmitting-receiving operation can be improved.
  • Fig. 2 shows an appearance of a bicycle having a speedometer incorporating the transmitting-receiving apparatus in accordance with one embodiment of the present invention.
  • Fig. 3 is an enlarged view of the portion "X" of Fig. 2.
  • Fig. 4 is a plan view of the receiving apparatus shown in Fig. 2.
  • Fig. 5 is a block diagram showing the structure of the transmitting-receiving apparatus shown in Fig. 1.
  • a signal generating portion 20 and a transmitting portion 22 comprise a transmitting apparatus 28 detachably mounted on a fork 34 for the front wheel of the bicycle 24 and a magnet 26 detachably mounted on a spoke 32 of the front wheel.
  • the magnet 26 is attached at a position spaced apart from the axis 36 by a distance corresponding to the distance between the axis 36 of the front wheel and the transmitting apparatus 28.
  • a contact of a lead switch (not shown) incorporated in the transmitting apparatus 28 is closed to generate one signal every time the magnet 26 passes the transmitting apparatus 28.
  • the generated signal is outputted as a wireless signal through the transmitting portion 22 of the transmitting apparatus 28 to be received by a receiving apparatus 30 mounted on a stem 19 of the bicycle 24.
  • the receiving apparatus 30 comprises a receiving portion 8 receiving the transmitted signal, a microcomputer 14 for carrying various arithmetic operations such as calculation of the travel speed, travel distance and so on based on the received signal, and a displaying portion 15 formed of, for example, liquid crystal for displaying the result of arithmetic operation as needed.
  • a switch 38 is provided in the receiving apparatus 30 for switching display of the results of arithmetic operations as needed.
  • Figs. 1A and 1B shows specific structures of various portions shown in Fig. 5.
  • a lead switch 1 and a resistance R are connected in series between the ground potential and a power supply potential V cc provided by a battery (not shown) incorporated in the transmitting apparatus.
  • a one shot multivibrator 3 and a one shot multivibrator 4 are connected in series between node (a) which is located between the lead switch 1 and the resistance R, and node (c), and further, the node (a) is directly connected to the multivibrator 4, whereby a double pulse generating portion 2 is formed.
  • the pulse width of the pulses generated by the multivibrator 3 is determined by the resistance R 1 and a capacitance C 1 defining a time constant.
  • the pulse width of the pulses generated by the multivibrator 4 is determined by the resistance R 2 and the capacitance C 2 defining a time constant.
  • a signal generating portion 20 is formed in this manner.
  • the transmitting portion 22 comprises an oscillating circuit 5 to which the output of the multivibrator 4 is connected, an amplifier 6 amplifying the signals from the oscillating circuit 5, and a transmitting coil 7 for transmitting the amplified signals.
  • an amplifier 10 is connected to a receiving coil 9 receiving the transmitted signals, and multivibrators 11 and 12 are connected in series between the amplifier 10 and an AND gate 13.
  • the output from the amplifier 10 is also connected directly to an input of the AND gate 13.
  • the pulse width on the pulses generated from the multivibrator 11 is determined by the resistance R 3 and the capacitance C 3 defining a time constant.
  • the pulse width of the pulses generated from the multivibrator 12 is determined by the resistance R 4 and the capacitance C 4 defining a time constant.
  • the output of the AND gate 13 is connected to a microcomputer 14.
  • the displaying portion 15 is also connected to the microcomputer 14.
  • the contact of the switch 1 is closed, whereby a current is generated between the power supply potential V cc and the ground potential, and a pulse voltage is generated at the node (a) (see the waveform (a)).
  • a first voltage is inputted to the one shot multivibrators 3 and 4.
  • the one shot multivibrator 3 By the voltage input, the one shot multivibrator 3 generates pulses having the pulse width R 1 C 1 , defining the pulse interval between two pulses (hereinafter referred to as double pulses) generated for one pulse voltage (see the waveform) (b)).
  • the one shot multivibrator 4 generates a first pulse P1 having the width R 2 C 2
  • the multivibrator 4 When the time R 1 C 1 is passed from the generation of the first pulse P1 and the pulse output from the multivibrator 3 falls, the multivibrator 4 generates, in response thereto, a second pulse P2 having the same pulse width as the first P1 (see the waveform (c)). In this manner, the first pulse P1 and the second pulse P2 constitute the double pulse.
  • the oscillating circuit 5 outputs an oscillating waveform (see the waveform (d)). It is amplified by the amplifier 6 and controls the current flowing through the transmitting coil 7 to transmit radio wave.
  • the radio wave corresponding to the double pulse based on the rotation signal transmitted in this manner is detected as a voltage change by a receiving coil 9 of the receiving portion 8 shown in Fig. 1B.
  • the detected voltage change is amplified by the amplifier 10 and is outputted as double pulse corresponding to the double pulse in the signal generating portion 20 (see the waveform (e)).
  • the first pulse D1 constituting the double pulse is inputted to the one shot multivibrator 11 and to one input of the AND gate 13. However, since no signal is inputted to the other input portion of the AND gate 13, no signal is outputted from the output portion of the gate.
  • the multivibrator 11 receiving the first pulse D1 generates a pulse having the pulse width W1 determined by the time constant R 3 C 3 (see the waveform (f)).
  • the multivibrator 12 At the fall of this pulse, the multivibrator 12 generates a pulse having the pulse width W2 determined by the time constant R 4 C 4 (see the waveform (g)).
  • the pulse width W1 and W2 are defined such that the second pulse D2 is included in the timing of generating of the pulse having the pulse width W 2 generated from the multivibrator 12.
  • one pulse is outputted from the AND gate 13 when the second pulse D2 of the transmitted double pulse is received (see the waveform (h)).
  • This pulse is a third pulse treated at a rotation signal corresponding to the aforementioned pulse voltage. Namely, the number of pulse generation in a prescribed period of the pulse voltages indicating the number of rotation of the front wheel of a bicycle is the same as that of the third pulse. Therefore, by inputting the third pulses to a one chip microcomputer 14 used for a conventional speedometer and by counting the number of generation of the third pulses, the travel speed of the bicycle can be calculated. The result of calculation is displayed on the displaying portion 15 as needed, and by accumulating the travel speed, the travel distance can be calculated and displayed in the displaying portion 15.
  • the multivibrator 11 is adapted to be not responsive to an input.
  • the output of the multivibrator 12 is at the "high level" and a noise is generated from the amplifier 10 near the generation timing of the second pulse, a signal may be outputted from the AND gate 13, causing a miscount.
  • FIG. 7 Another embodiment of the present invention shown in Fig. 7 is a receiving apparatus preventing such a miscount.
  • This embodiment differs from the first embodiment shown in Fig. 1B in that a flipflop circuit 23 is added in the receiving portion 8.
  • the transmitting apparatus may be the same as that shown in the first embodiment of Fig. 1A.
  • the flipflop circuit 23 has its set input S and a reset input R connected to the output of the one shot multivibrator 11 and to the output of the AND gate 13, respectively.
  • the output Q of the flipflop circuit 23 is connected to the one chip microcomputer 14 of the speedometer.
  • the present invention is applied to a speedometer for a bicycle in the foregoing, the application of this invention is not limited thereto.
  • it can be applied to any apparatuses such as a wireless sphygmometer for exercise indoor and outdoor, or an apparatus for detecting rotation speed of an indoor exercise bicycle and any apparatuses which is wireless, in which signal transmission and reception with low power consumption are required and which is susceptible to external noises.
  • double pulses are generated and transmission/reception are carried out based on these pulses in the foregoing, three or more pulses may be used, provided that the pulses are generated with prescribed pulse intervals. In that case, these pulses as a whole define one pulse, so that the reliability can be further improved in the transmitting-receiving apparatus.
  • two or more pulse signals having prescribed pulse intervals are generated based on one input signal, and the pulse signals are transmitted and received, as described above. Therefore, even if other pulse signals happen to be mixed because of noise and the like, such signals are not erroneously counted, whereby the reliability of the transmitting-receiving apparatus can be improved.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Selective Calling Equipment (AREA)
  • Noise Elimination (AREA)
  • Measuring Fluid Pressure (AREA)
EP90108653A 1989-06-10 1990-05-08 Wireless transmitting-receiving apparatus for a bicycle Expired - Lifetime EP0402620B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1147110A JPH0312798A (ja) 1989-06-10 1989-06-10 無線式送受信装置
JP147110/89 1989-06-10

Publications (3)

Publication Number Publication Date
EP0402620A2 EP0402620A2 (en) 1990-12-19
EP0402620A3 EP0402620A3 (en) 1992-08-05
EP0402620B1 true EP0402620B1 (en) 1997-04-23

Family

ID=15422749

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90108653A Expired - Lifetime EP0402620B1 (en) 1989-06-10 1990-05-08 Wireless transmitting-receiving apparatus for a bicycle

Country Status (10)

Country Link
US (1) US5170161A (ja)
EP (1) EP0402620B1 (ja)
JP (1) JPH0312798A (ja)
KR (1) KR930007548B1 (ja)
AU (1) AU627301B2 (ja)
CA (1) CA2017733C (ja)
DE (1) DE69030531T2 (ja)
FI (1) FI107843B (ja)
HK (1) HK1007211A1 (ja)
NZ (1) NZ233882A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7253610B2 (en) 2004-01-21 2007-08-07 Shimano, Inc. Self-powered bicycle signal output device and display apparatus using same
CN101547012B (zh) * 2008-03-24 2016-03-16 株式会社岛野 无线通信装备

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AU648044B2 (en) * 1989-10-13 1994-04-14 Soothcart Pty. Limited Container and lid arrangement
US5736937A (en) * 1995-09-12 1998-04-07 Beta Monitors & Controls, Ltd. Apparatus for wireless transmission of shaft position information
US6011491A (en) * 1995-10-10 2000-01-04 Goetzl; Brent A. Speedometer for in-line skates
US5721539A (en) * 1995-10-10 1998-02-24 Goetzl; Brent A. Speedometer for in-line skates
DE29615910U1 (de) * 1996-08-05 1997-12-04 Lumpert, Jürg B., Zürich Sportgerät mit Datenanzeige für den Benutzer
FI100924B (fi) 1996-10-11 1998-03-13 Polar Electro Oy Telemetrinen mittausmenetelmä ja mittausjärjestelmä
FR2755529B1 (fr) * 1996-11-07 1999-02-05 Mavic Sa Systeme de commande et/ou de mesure a liaison sans fil pour cycle
DE19653117C2 (de) † 1996-12-19 2002-10-24 Daniel Groos Verfahren zur Bestimmung der Fortbewegungsgeschwindigkeit und der Bodenauflage und dazugehöriges Rad für Rollschuhe und Rollbretter
US6428050B1 (en) * 1998-12-15 2002-08-06 Adam K. Brandley Motorized skate
DE19937155A1 (de) * 1999-08-06 2001-03-15 Bosch Gmbh Robert System zur Erzeugung eines Signals zur Überlagerung von Informationen
FR2828285B1 (fr) 2001-08-03 2004-02-13 Mavic Sa Dispositif de mesure des parametres de roulage d'une bicyclette
US6937811B2 (en) * 2002-11-19 2005-08-30 Lumera Corporation Polymer waveguide devices incorporating electro-optically active polymer clads
US20040224718A1 (en) * 2003-05-09 2004-11-11 Chen Yu Yu Multifunctional body/motion signal receiving and display device
FI115677B (fi) * 2003-12-19 2005-06-15 Suunto Oy Rannetietokone
US7408447B2 (en) * 2004-08-19 2008-08-05 Saris Cycling Group, Inc. Wireless, passive wheel-speed and cadence detection system
US8028443B2 (en) 2005-06-27 2011-10-04 Nike, Inc. Systems for activating and/or authenticating electronic devices for operation with footwear
US8188868B2 (en) 2006-04-20 2012-05-29 Nike, Inc. Systems for activating and/or authenticating electronic devices for operation with apparel
FR2903071B1 (fr) * 2006-07-03 2009-04-17 Salomon Sa Dispositif de mesure de vitesse notamment pour cycle
US7878521B2 (en) * 2007-04-16 2011-02-01 Trek Bicycle Corporation Bicycle frame with device cavity
KR100869228B1 (ko) * 2008-03-11 2008-11-18 주식회사 드림피아 자전거의 주행거리 확인시스템 및 그에 따른 제어방법
US20110084822A1 (en) * 2009-10-09 2011-04-14 Johnson Li Detecting apparatus for a bicycle
US8384377B2 (en) * 2009-10-30 2013-02-26 Honeywell International Inc. Self-powered magnetic tachometer for supplying a signal representative of rotational rate and absolute position
JP6383951B2 (ja) * 2014-02-18 2018-09-05 パナソニックＩｐマネジメント株式会社 蓄電装置の制御方法、蓄電装置及びプログラム
CN106297259B (zh) * 2016-08-01 2019-04-30 西门子传感器与通讯有限公司 数据传输系统、数据传输方法
EP3638535B1 (de) * 2017-06-14 2022-11-02 Badass Ebikes GmbH Vorrichtung zum steuern und/oder regeln von geschwindigkeiten eines elektroleichtfahrzeugs, aufsetzbox und verfahren zur verwendung

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7253610B2 (en) 2004-01-21 2007-08-07 Shimano, Inc. Self-powered bicycle signal output device and display apparatus using same
CN101547012B (zh) * 2008-03-24 2016-03-16 株式会社岛野 无线通信装备

Also Published As

Publication number Publication date
NZ233882A (en) 1992-10-28
AU5471990A (en) 1990-12-13
DE69030531D1 (de) 1997-05-28
CA2017733A1 (en) 1990-12-10
US5170161A (en) 1992-12-08
EP0402620A2 (en) 1990-12-19
AU627301B2 (en) 1992-08-20
FI902914A0 (fi) 1990-06-11
CA2017733C (en) 1994-07-26
FI107843B (fi) 2001-10-15
KR930007548B1 (ko) 1993-08-12
JPH0312798A (ja) 1991-01-21
KR910001384A (ko) 1991-01-30
HK1007211A1 (en) 1999-04-01
DE69030531T2 (de) 1997-09-18
EP0402620A3 (en) 1992-08-05

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